Enhanced Precursorsv2.6 adds an additional option for Precursors. This is a separate checkbox called 'Enhanced Precursors' and will only function when the normal 'Precursors' option is active.
When Enhanced Precursors are active, Precursors are not immediately deployed when a ruin is generated. Instead, they are held in 'Tombs' deep underground and will deploy at some point after ruin generation. This deployment is known as Emergence.
The ground forces and each operational group will have a emergence clock, generated when the ruin is created. The ground forces will always have the shortest clock and will therefore emerge first to secure the surface. The bases and ships will emerge at some point after the ground forces and not all at once. This clock is randomised, so different ruins of the same type may have very different emergence timescales. Bases will tend to have shorter clocks than ships, but not always, and the small ruins will tend to have faster clocks overall, as their forces will tend to be small and easily deployed.
The timeframe for ground force emergence can be as long as twenty years, with the ships up to five years later. However, the emergence clock will run down faster than real time if there is activity on the surface or in space close to the planet. This includes ground forces and populations. Larger forces will have a greater effect on the clock, although this is not linear. Combat with Precursor forces will have the greatest impact on speeding up the emergence clock.
Unlike normal precursors, there is a significant chance a ruin is completely undefended. This is as high as 50% for a destroyed outpost and gradually reduces for the larger ruins, but a Partially Intact Colony still has a 20% chance of being undefended. When a ruin is defended, it will tend to have larger forces than normal precursors, with a 50% greater chance of each operational group type appearing.
These changes should add some more interesting decisions to exploiting ruins. While it is certainly possible to have a defending force waiting for emergence, they could wait years and there might be no defenders anyway. As time passes and more ruins appear, it will become more difficult to have defenders stood by in every location. Maybe a quiet approach is better, risking minimal forces to quietly exploit any resources without waking the defenders? Establishing a population is also risky on ruin worlds, even if the ruin itself has been exploited, there may still be entombed ground forces and ships, so populations will need to be guarded. Even different planets in the same system may be under long-term threat.
I may modify the detail behind the mechanics based on playtest, but the general principles should remain. I intended to run a playtest campaign on this relatively soon (which will of course be 40k
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